阅读说明：本技术 一种提高色织物耐皂洗褪色牢度的处理方法及色织面料 (Treatment method for improving fastness to soaping and fading of yarn dyed fabric and yarn dyed fabric ) 是由 张瑞萍 韦苏娟 何杨 王杰 申晓萍 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种提高色织物耐皂洗褪色牢度的处理方法及色织面料,包括：用水玻璃制备二氧化硅水溶胶；采用二氧化硅水溶胶对色织物浸轧处理后烘干；制备十六烷基三甲氧基硅烷水解液；向十六烷基三甲氧基硅烷水解液中加入次亚磷酸钠后对经过二氧化硅水溶胶处理得到的色织物进行再次浸轧处理,烘干,烘焙。本发明处理方法原料易得,价格低廉,安全环保,工艺简单,提高了化学合成染料色织物和天然染料色织物的耐皂洗褪色牢度。(The invention discloses a processing method for improving soaping fading resistance fastness of yarn dyed fabric and yarn dyed fabric, which comprises the following steps: preparing silica hydrosol by using water glass; padding the colored fabric with silicon dioxide hydrosol, and drying; preparing hexadecyl trimethoxy silane hydrolysate; adding sodium hypophosphite into the hexadecyl trimethoxy silane hydrolysate, then carrying out padding treatment again on the yarn dyed fabric obtained by the treatment of the silica hydrosol, drying and baking. The treatment method has the advantages of easily available raw materials, low price, safety, environmental protection and simple process, and improves the fastness to soaping and fading of the chemically synthesized dye yarn dyed fabric and the natural dye yarn dyed fabric.)

1. a treatment method for improving fastness to soaping and fading of yarn dyed fabrics is characterized by comprising the following steps:

1) Adding deionized water into water glass to prepare a water glass solution with the concentration of 2-5 wt%, dropwise adding an acid catalyst while stirring, controlling the pH value to be 10-11, continuously stirring for 60-180 min, aging to obtain a silicon dioxide hydrosol, padding the colored fabric by using the silicon dioxide hydrosol, and drying;

2) dissolving hexadecyl trimethoxy silane in absolute ethyl alcohol to obtain a hexadecyl trimethoxy silane ethanol solution, adjusting the pH value of the hexadecyl trimethoxy silane ethanol solution to be 5-6 by using a citric acid solution, then carrying out hydrolysis reaction to obtain a hexadecyl trimethoxy silane hydrolysate, and adding sodium hypophosphite to obtain a finishing solution before use;

3) And (2) padding the yarn-dyed fabric obtained by the treatment in the step 1) by using the finishing liquid, and baking the yarn-dyed fabric after drying.

2. The treatment method for improving fastness to soaping of yarn dyed fabric according to claim 1 wherein the water glass has a modulus of 2.3.

3. The treatment method for improving fastness to washing and fading of yarn dyed fabric as claimed in claim 1, wherein the acidic catalyst is concentrated hydrochloric acid.

4. The treatment method for improving the fastness to washing and fading of yarn-dyed fabric according to claim 1, wherein the liquid carrying rate of padding in the step 1) is 80-100%, and the drying temperature is 80-100 ℃.

5. The treatment method for improving the fastness to soaping and fading of yarn dyed fabric according to claim 1, wherein the concentration of the hexadecyl trimethoxy silane in the hexadecyl trimethoxy silane ethanol solution is 1 to 5 wt%.

6. The treatment method for improving the fastness to washing and fading of yarn dyed fabric according to claim 1, wherein the temperature of the hydrolysis reaction in the step 2) is 20-25 ℃ and the reaction time is 30-60 min.

7. The treatment method for improving the fastness to washing and fading of yarn dyed fabric according to claim 1, wherein the concentration of sodium hypophosphite in the finishing liquid in the step 2) is 10-30 g/L.

8. The treatment method for improving the fastness to washing and fading of yarn dyed fabric according to claim 1, wherein the liquid carrying rate of padding in the step 3) is 80-100%; the drying temperature is 80-90 ℃; the baking temperature is 150-180 ℃, and the baking time is 3-5 min.

9. the treatment method for improving the fastness to soaping of yarn dyed fabric according to claim 1, wherein the yarn dyed fabric is a synthetic dye yarn dyed fabric or a natural dye yarn dyed fabric.

10. The yarn-dyed fabric obtained by the treatment method for improving the fastness to soaping and fading of the yarn-dyed fabric according to any one of claims 1 to 9.

Technical Field

The invention belongs to the field of textile processing, and particularly relates to a treatment method for improving the fastness to soaping and fading of dye dyeing and a yarn-dyed fabric.

Background

With the improvement of the living standard of people, the quality requirement on the textile is higher and higher, and comfort, nature and health care are pursued. In recent years, germany and other countries in the european and united states have established a series of ecological textile standards in succession. The color fastness is an important index for evaluating the dyeing quality of textiles and is also an important factor for reducing the pollution of waste water. Particularly, since the problem of harm to synthetic forbidden dyes is highly valued at home and abroad, natural dyes derived from plants are actively studied on the aspect of dyeing textiles in order to protect public health and environmental safety. But the biggest problem restricting the industrialization of the natural dye dyed fabric at present is the color fastness problem. Although the general mordant can improve the color fastness to a certain degree, the mordant has the problems of heavy metal exceeding and water quality pollution. The current color fixing agent also has the environmental protection problem of releasing formaldehyde.

Disclosure of Invention

In view of the above, the present invention provides a processing method for improving the fastness to soaping and fading of yarn-dyed fabric and a yarn-dyed fabric, which aims to improve the fastness to soaping and fading of yarn-dyed fabric dyed with chemical synthetic dyes or natural dyes and ensure the safety and environmental protection of the processing and processing processes.

In order to achieve the above object, the invention provides a treatment method for improving fastness to soaping and fading of yarn dyed fabrics, which comprises the following steps:

1) Adding deionized water into water glass to prepare a water glass solution with the concentration of 2-5 wt%, dropwise adding an acid catalyst while stirring, controlling the pH value to be 10-11, continuously stirring for 60-180 min, aging to obtain a silicon dioxide hydrosol, padding the colored fabric by using the silicon dioxide hydrosol, and drying;

2) dissolving hexadecyl trimethoxy silane in absolute ethyl alcohol to obtain a hexadecyl trimethoxy silane ethanol solution, adjusting the pH value of the hexadecyl trimethoxy silane ethanol solution to be 5-6 by using a citric acid solution, then carrying out hydrolysis reaction to obtain a hexadecyl trimethoxy silane hydrolysate, and adding sodium hypophosphite to obtain a finishing solution before use;

3) And (2) padding the yarn-dyed fabric obtained by the treatment in the step 1) by using the finishing liquid, and baking the yarn-dyed fabric after drying.

Preferably, the modulus of the water glass is 2.3.

Preferably, the acidic catalyst is concentrated hydrochloric acid.

Preferably, the liquid carrying rate of padding in the step 1) is 80-100%, and the drying temperature is 80-100 ℃.

Preferably, the concentration of the hexadecyl trimethoxy silane in the hexadecyl trimethoxy silane ethanol solution is 1 to 5 weight percent.

Preferably, the temperature of the hydrolysis reaction in the step 2) is 20-25 ℃, and the reaction time is 30-60 min.

preferably, the concentration of sodium hypophosphite in the finishing liquid in the step 2) is 10-30 g/L.

Preferably, the liquid carrying rate of padding in the step 3) is 80-100%; the drying temperature is 80-90 ℃; the baking temperature is 150-180 ℃, and the baking time is 3-5 min.

Preferably, the yarn dyed fabric is a synthetic dye yarn dyed fabric or a natural dye yarn dyed fabric.

the invention also provides the yarn-dyed fabric obtained by the treatment method for improving the fastness to soaping and fading of the yarn-dyed fabric.

Compared with the prior art, the method has the advantages that the dyed fabric is padded and padded with the silicon dioxide hydrosol and then dried, then padded and padded with the hexadecyl trimethoxy silane hydrolysate containing sodium hypophosphite and dried, and finally baked, and experiments prove that the soaping and fading resistance fastness of the dyed fabric after being treated is improved to 4-5 levels. In the treatment process, the silicon dioxide hydrosol is prepared by adopting the water glass, the raw materials are easy to obtain, the price is low, and the process is simple.

Drawings

FIG. 1 is a graph showing the particle size distribution of the silica hydrosol prepared in example 1 of the present invention.

Detailed Description

For a further understanding of the invention, reference will now be made to the preferred embodiments of the present invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the present invention and is not intended to limit the scope of the claims which follow.

All of the starting materials of the present invention, without particular limitation as to their source, may be purchased commercially or prepared according to conventional methods well known to those skilled in the art.

The invention provides a treatment method for improving the fastness to soaping and fading of yarn dyed fabrics, which comprises the following steps:

1) Adding deionized water into water glass to prepare a water glass solution with the concentration of 2-5 wt%, dropwise adding an acid catalyst while stirring, controlling the pH value to be 10-11, continuously stirring for 60-180 min, aging to obtain a silicon dioxide hydrosol, padding the colored fabric by using the silicon dioxide hydrosol, and drying;

2) Dissolving hexadecyl trimethoxy silane in absolute ethyl alcohol to obtain a hexadecyl trimethoxy silane ethanol solution, adjusting the pH value of the hexadecyl trimethoxy silane ethanol solution to be 5-6 by using a citric acid solution, then carrying out hydrolysis reaction to obtain a hexadecyl trimethoxy silane hydrolysate, and adding sodium hypophosphite to obtain a finishing solution before use;

3) and (2) padding the yarn-dyed fabric obtained by the treatment in the step 1) by using the finishing liquid, and baking the yarn-dyed fabric after drying.

The method comprises the steps of firstly adding deionized water into water glass to prepare a water glass solution with the concentration of 2-5 wt%, dropwise adding an acid catalyst while stirring, controlling the pH value to be 10-11, continuously stirring for 60-180 min, aging to obtain a silicon dioxide hydrosol, padding the colored fabric by using the silicon dioxide hydrosol, and then drying. In the present invention, the modulus of water glass is preferably 2.3, and the acidic catalyst is preferably concentrated hydrochloric acid. In the invention, in the process of preparing the silica hydrosol by taking water glass as a raw material, the pH value of the water glass solution after dropwise adding the acid catalyst has great influence on the gelation process of the water glass sol, and when the pH value is less than 9.8, the stable existence time of the sol is very short and is only a few hours; when the pH is greater than 11.2, no significant tyndall effect can be observed. Therefore, the pH value is controlled to be 10-11, and more preferably 10.5 in the process of dropwise adding the acid catalyst, so that the transparent appearance of the sol, high particle size uniformity and good stability are ensured.

The invention adopts the water glass which is easy to obtain the raw material to prepare the silicon dioxide hydrosol, has low price and simple process, and is suitable for large-scale production.

After the silica hydrosol is prepared, padding the colored fabric by using the silica hydrosol, preferably performing double-padding and double-rolling, wherein the liquid carrying rate is preferably 80-100%, and after the padding treatment is finished, drying is performed, and the drying temperature is preferably 80-100 ℃.

Then, dissolving hexadecyl trimethoxy silane in absolute ethyl alcohol to obtain a hexadecyl trimethoxy silane ethanol solution, adjusting the pH value of the hexadecyl trimethoxy silane ethanol solution to be 5-6 by using a citric acid solution, then carrying out hydrolysis reaction to obtain a hexadecyl trimethoxy silane hydrolysate, and adding sodium hypophosphite to obtain a finishing liquid before use. In the invention, the concentration of the hexadecyl trimethoxy silane in the obtained hexadecyl trimethoxy silane ethanol solution is preferably 1-5 wt%, the temperature of the hydrolysis reaction is preferably 20-25 ℃, and the time of the hydrolysis reaction is preferably 30-60 min. And then adding sodium hypophosphite into the hydrolysate to obtain finishing liquid, and immediately padding the colored fabric with the finishing liquid to obtain the colored fabric treated by the silica hydrosol. In the invention, the concentration of sodium hypophosphite in the finishing liquid is preferably 10-30 g/L, and the liquor carrying rate of padding the colored fabric by adopting the finishing liquid is preferably 80-100%. After padding treatment is carried out on the colored fabric, drying is carried out, and the drying temperature is preferably 80-90 ℃; and then baking the colored fabric, wherein the baking temperature is preferably 150-180 ℃, and the baking time is preferably 3-5 min.

The yarn dyed fabric in the invention is preferably a synthetic dye yarn dyed fabric or a natural dye yarn dyed fabric.

The invention also provides the yarn-dyed fabric obtained by the treatment method for improving the fastness to soaping and fading of the yarn-dyed fabric. Experiments show that the fastness to soaping and fading of the yarn dyed fabric treated by the treatment method is greatly improved.

To further illustrate the present invention, the following examples are provided for illustration. The starting materials used in the following examples of the present invention are all commercially available products.